With anticipation growing and only two days left until their encounter, heavyweights Bermane Stiverne and Deontay Wilder held the final press conference on Thursday in support of their Saturday bout in Las Vegas. The fight will be broadcast by Showtime (10 p.m. ET/ 7 p.m. PT). Click here for a full preview of the fight.

Wilder will be looking to become the first American-born world heavyweight champion since Shannon Briggs, and the Alabama native did not hold back at the mic.

“If you only knew the whooping I’m going to put on this boy,” Wilder said. “You all want the first American champ, but this is for me. I am not scared to walk with my head held high because I am ready for any test.”

Wilder (32-0, 32 KOs) enters the ring a slight favorite to win and brings an unblemished record, with a 100% knockout ratio. But critics of The Bronze Bomber point out this record has been earned fighting low-level opposition. This is his time to prove them wrong.

“Many people wrote me off early in my career,” Wilder said. “People say I’m not supposed to be here. People still write me off and I thank them for that. Because when they write me off I still go to another level and push forward.”